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By: Chuck Glick
New: 05-26-2008 06:21 PM
Updated: 05-28-2008 08:09 PM
Views: 1211 times
Finally stopped prolonging the production of the VEX Mecanums I designed this past year. This is the resulting robot for a senior project that teamate, Ron Leibach, and I created. The wheels are made of 3 parts: the hub, spoke, and roller. We reproduced the wheels by using a urethane plastic from Smooth-On, the same company team 357 has used for their rollers in the past. After making the wheels, we have come up with a few design modifications to make them perform better and will be much more meticulous in our pouring technique to produce a better wheel.
Thanks to Andrew Adaman and Team 357 for helping consult with designs and manufacturing techinques.
Questions?
Discussion
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05-26-2008 07:07 PM
thefro526
Re: pic: VEX Mecanum Project:Done(ish)
They look good, they remind me of my mecanums from a few years ago, except well, better. How's your speed with those because when I had mine they would strafe super slow? Also is there any kind of lubricant or anything between the rollers and the hub?
Here mine if you wanna check them out. http://www.chiefdelphi.com/media/photos/28631
05-26-2008 08:07 PM
Chuck Glick
Re: pic: VEX Mecanum Project:Done(ish)
Currently strafing is a bit slow, but tomorrow heat shrink will be added to the rollers for traction and graphite lubricant to reduce friction.
The plan for the next iteration is to use 1/4" shaft and bearings to have a very smooth roll.
05-26-2008 08:21 PM
thefro526
Re: pic: VEX Mecanum Project:Done(ish)
Never thought of heat shrinking the rollers... might have to try that
05-26-2008 11:56 PM
Eric24
Re: pic: VEX Mecanum Project:Done(ish)
I might have to try to make me some after I finish my vex tank with CMU cam.
05-27-2008 01:01 AM
moojoe
Re: pic: VEX Mecanum Project:Done(ish)
Wow Chuck, thats absolutely amazing!
you need to tell me when your presentation is, I need to see that thing.
05-27-2008 08:31 AM
Andy Baker
Re: pic: VEX Mecanum Project:Done(ish)
Very nice design, Chuck. Good job getting this done.
Sincerely,
Andy Baker
05-27-2008 12:54 PM
Rich Kressly
Re: pic: VEX Mecanum Project:Done(ish)
Here's a short video of Chuck & Ron's Vex Mecanum robot.
http://video.google.com/videoplay?do...38259993&hl=en
This is a great example of how the FIRST community inspires and supports an idea. For three years both of these students were exposed to 357's Jester Drive and the process for molding/manufacturing wheels and hubs. That initial spark and solid relationships turned into a project idea, and, with support from 357, Andrew, and others the project turned into reality.
While this is not the first or last Vex Mecanum drive we will ever see, it certainly was a fabulous learning experience for the students involved that brought together a well developed "at home" process (357's roller/hub design), the use of our 3D printer, and the award winning Vex platform. All that and a great application of our school's required senior project.
Chuck will be studying Mechanical Engineering at Drexel in the fall and Ron will be attending Case Western for Mechanical & Aeronautical Engineering.
Now they both need to do well because everyone knows. No pressure, guys 
05-27-2008 02:17 PM
vivek16
Re: pic: VEX Mecanum Project:Done(ish)
so.... Where are you selling these babies? 
-Vivek
05-27-2008 09:16 PM
JVN
Re: pic: VEX Mecanum Project:Done(ish)
VERY impressive work gentlemen. I guess I'd better watch my back if I want to keep my job!
Kudos on an excellent design. It is especially cool that you actually took the time to get these built. Anyone can draw something in CAD, but it takes some real work to get a design fully functional. (It also shows real character to continue to improve a "completed" design.) I imagine you learned quite a bit from this process.
-John
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